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A coin is dropped on a planet where the acceleration due to gravity has a magnitude of 11.2 m/s2. What is the coin's speed after 31.1 seconds?
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- A car moves from the point (6 m) i + (7 m) j to the point (6 m) i - (6 m) j in 8 s. What is the magnitude of the average velocity of the car?A bullet shot straight up returns to its starting point in 10 s. What is the initial speed of the bullet, assuming negligible air resistance? 9.8 m/s 49 m/s 98 m/s 25 m/sAn object falls freely from rest on a planet where there is no appreciable atmosphere and the acceleration due to gravity is 20 m/s2. After 5 seconds, the object will have a speed of ... a) 5 m/s. b) 50 m/s. c) 10 m/s. d) 100 m/s. e) 20 m/s.
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